/**
**************************************************************************************
*Founder Effect                                                                      *
*Copyright (C) 2006-2007, 5d Studios (www.5d-Studios.com)                            *
*                                                                                    *
*This library is free software; you can redistribute it and/or                       *
*modify it under the terms of the GNU Lesser General Public                          *
*License as published by the Free Software Foundation; either                        *
*version 2.1 of the License, or (at your option) any later version.                  *
*                                                                                    *
*This library is distributed in the hope that it will be useful,                     *
*but WITHOUT ANY WARRANTY; without even the implied warranty of                      *
*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU                   *
*Lesser General Public License for more details.                                     *
*                                                                                    *
*You should have received a copy of the GNU Lesser General Public                    *
*License along with this library; if not, write to the Free Software                 *
*Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA      *
**************************************************************************************
*/
#pragma once
#include <math.h>
#include <stdio.h>

#if WIN32
#if _MSC_VER
	#include <windows.h>
#else
	#error Unknown Compiler
#endif
#endif

/**
================================
High performance Timer
================================
*/
class Timer
{
public:
    Timer(void);

    void Pause();
    void UnPause();

    int Refresh();
    virtual double GetFrameTime() {return m_frametime;};
	virtual double GetTime()	  {return m_time;};

    double         GetPauseTime() { return m_pauseTime; };
    int            GetNumFrames() { return m_frames; };

private:
	double			m_time;			// time since windows started (s)
	double			m_pauseTime;	// time when the timer was paused
	double			m_lastTime;		// last recorded time
	double			m_frametime;	// time elapsed in the last frame (s)
	int				m_frames;		// number of frames

	LARGE_INTEGER	m_frequency;
	double			m_resolution;
	

	bool			m_paused;

	int				m_lowshift;
	BYTE			m_performanceTimerEnabled;

	unsigned int	m_oldTime;
	int				m_sametimecount;	// counter for frames with the same time.
public:
    virtual ~Timer(void);
};
